II. NEW FEATURES AND IMPROVEMENT 1. New Data Card support. WRT54G3G-ST now supports the following new ex- press data cards (with adaptor): a. Sierra Wireless AC597E b. Option Express EX720 2. Improve 3G uplink throughput. Update data card serial driver and modify multi-buffer mechanism for uplink throughput. The EVDO uplink throughput is no longer limited to approximately 300 kbps when the network is capable for higher rate. 3. Update new daylight saving time for US and Canada. The start date for day- light saving time is changed to start at second Sunday in March. 4. Add Modem backup. Enable modem backup feature as option. The 3G data card can be the backup for the WAN connection. 3G IP can be connected when the wired WAN connection is down.